well, I have a weaker laptop and both Persona games (3 FES and 4) and I am always above 50% of speed (happens only in really hectic areas, like the first part of the market district north in P4 and with the shining enemies in both games, altough if there are more than 2 it crawls xD) usually around 70-100% speed, but most likely it is because of my graphics card